<template>
	<div class="list" ref="wrapper">
		<div>
			<div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrapper">
						<div class="button">{{this.currentCity}}</div>
					</div>
					
				</div>
			</div>
			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div class="button-wrapper" v-for="item of hot" :key="item.id" @click="handleCityClick(item.name)">
						<div class="button">{{item.name}}</div>
					</div>
					
				</div>
				
			</div>
			<div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
				<div class="title border-topbottom">{{key}}</div>
				<ul class="item-list">
					<li class="item border-bottom" v-for="innerItem of item" :key="innerItem.id"
					@click="handleCityClick(innerItem.name)"
					>{{innerItem.name}}</li>
					
				</ul>
			</div>
		</div>
	</div>

</template>
<script>
import Bscroll from 'better-scroll'
import { mapState ,mapMutations } from 'vuex'
	export default {
		name: 'CityList',
		computed: { 
			...mapState({
				currentCity: 'city'
			})
		},
		props: {
			hot: Array,
			cities: Object,
			letter: String

			},
		methods : {
			handleCityClick (city) {
				//this.$store.commit("changeCity", city)
				this.changeCity(city)
				this.$router.push("/")
			},
			...mapMutations(['changeCity'])
		},
		mounted () {
			this.scroll = new Bscroll(this.$refs.wrapper)

		},
		watch: {//监听器去监听字母的变化 change
			letter () {
				if (this.letter) {
					const element = this.$refs[this.letter][0]
					this.scroll.scrollToElement(element)
				}
				//console.log(this.letter)
			}

		}
	}
</script>
<style lang="stylus" scoped>
@import '~styles/veribles.styl'
.border-topbottom
	&:before
		border-color:#ccc
	&:after
		border-color:#ccc
.border-bottom
	&:before
		border-color:#ccc
.list
	position:absolute
	top:1.58rem
	left:0
	right:0
	bottom:0
	overflow:hidden
	.title
		line-height: .64rem
		background:#eee
		padding-left: .2rem
		color:#666
		font-size:.26rem
	.button-list
		padding:.1rem .6rem .1rem .1rem
		overflow:hidden
		.button-wrapper
			width:33.33%
			float:left
			.button
				padding:.1rem 0
				text-align:center
				margin:.1rem
				border:.02rem solid #ccc
	.item-list
		.item
			line-height:.76rem
			padding-left:.2rem

</style>